$J/ψ$ Pair Production at the Tevatron with $\sqrt{s}=1.96~\mathrm{TeV}

Details $J/ψ$ Pair Production at the Tevatron with $\sqrt{s}=1.96~\mathrm{TeV} $J/ψ$ Pair Production at the Tevatron with $\sqrt{s}=1.96~\mathrm{TeV}

2012-04-08

arxiv.org/abs/1204.1700v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 3 figures

Scientific paper

We revisit the $J/\psi$ pair production issue at the Fermilab Tevatron Run II with the center-of-mass energy $\sqrt{s}=1.96 \mathrm{TeV}$. Both color-singlet and -octet production mechanisms are considered. Our result shows that the transverse momentum($p_T$) scaling behaviors of double $J/\psi$ differential cross sections in color-singlet and -octet deviate distinctively from each other while $p_T$ is larger than $8 \mathrm{GeV}$, and with the luminosity of ${5 \mathrm{fb^{-1}}}$ the $J/\psi$ pair events from color-singlet scheme are substantially measurable in Tevatron experiments, even with certain lower transverse momentum cut. Hence the Tevatron is still possibly a platform to check the heavy quarkonium production mechanism.

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